1. Arnold E. N.(1970).Functional aspects of some characters of lacertid lizards.D.Phil. Thesis:University of Oxford.
2. Lizards with northern affinities from the mountains of Oman;Arnold E. N.;Zool. Meded., Leiden,1972
3. Relationships of the Palaearctic lizards assigned to the genera Lacerta, Algyroides and Psammodromus (Reptilia: Lacertidae);Arnold E. N.;Bull. Br. Mus. nat. hist. (Zool.),1973
4. Osteology, genitalia and the relationships of Acanthodactylus (Reptilia: Lacertidae);Arnold E. N.;Bull. Br. Mus. nat. Hist. (Zool.),1983